001
014
015 package com.liferay.portal.servlet;
016
017 import com.liferay.portal.NoSuchLayoutException;
018 import com.liferay.portal.kernel.language.LanguageUtil;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021 import com.liferay.portal.kernel.util.CharPool;
022 import com.liferay.portal.kernel.util.GetterUtil;
023 import com.liferay.portal.kernel.util.LocaleUtil;
024 import com.liferay.portal.kernel.util.StringPool;
025 import com.liferay.portal.kernel.util.Validator;
026 import com.liferay.portal.kernel.xml.Element;
027 import com.liferay.portal.util.PortalUtil;
028 import com.liferay.portal.util.WebKeys;
029
030 import java.io.IOException;
031
032 import java.util.Collections;
033 import java.util.HashSet;
034 import java.util.List;
035 import java.util.Locale;
036 import java.util.Set;
037
038 import javax.servlet.RequestDispatcher;
039 import javax.servlet.ServletContext;
040 import javax.servlet.ServletException;
041 import javax.servlet.http.HttpServlet;
042 import javax.servlet.http.HttpServletRequest;
043 import javax.servlet.http.HttpServletResponse;
044
045
048 public class I18nServlet extends HttpServlet {
049
050 public static Set<String> getLanguageIds() {
051 return _languageIds;
052 }
053
054 public static void setLanguageIds(Element root) {
055 List<Element> rootElements = root.elements("servlet-mapping");
056
057 for (Element element : rootElements) {
058 String servletName = element.elementText("servlet-name");
059
060 if (servletName.equals("I18n Servlet")) {
061 String urlPattern = element.elementText("url-pattern");
062
063 String languageId = urlPattern.substring(
064 0, urlPattern.lastIndexOf(CharPool.SLASH));
065
066 _languageIds.add(languageId);
067 }
068 }
069
070 _languageIds = Collections.unmodifiableSet(_languageIds);
071 }
072
073 @Override
074 public void service(
075 HttpServletRequest request, HttpServletResponse response)
076 throws IOException, ServletException {
077
078 try {
079 String[] i18nData = getI18nData(request);
080
081 if ((i18nData == null) ||
082 !PortalUtil.isValidResourceId(i18nData[2])) {
083
084 PortalUtil.sendError(
085 HttpServletResponse.SC_NOT_FOUND,
086 new NoSuchLayoutException(), request, response);
087 }
088 else {
089 String i18nLanguageId = i18nData[0];
090 String i18nPath = i18nData[1];
091 String redirect = i18nData[2];
092
093 request.setAttribute(WebKeys.I18N_LANGUAGE_ID, i18nLanguageId);
094 request.setAttribute(WebKeys.I18N_PATH, i18nPath);
095
096 ServletContext servletContext = getServletContext();
097
098 RequestDispatcher requestDispatcher =
099 servletContext.getRequestDispatcher(redirect);
100
101 requestDispatcher.forward(request, response);
102 }
103 }
104 catch (Exception e) {
105 _log.error(e, e);
106
107 PortalUtil.sendError(
108 HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
109 response);
110 }
111 }
112
113 protected String[] getI18nData(HttpServletRequest request) {
114 String path = GetterUtil.getString(request.getPathInfo());
115
116 if (Validator.isNull(path)) {
117 return null;
118 }
119
120 String i18nLanguageId = request.getServletPath();
121
122 int pos = i18nLanguageId.lastIndexOf(CharPool.SLASH);
123
124 i18nLanguageId = i18nLanguageId.substring(pos + 1);
125
126 if (_log.isDebugEnabled()) {
127 _log.debug("Language ID " + i18nLanguageId);
128 }
129
130 if (Validator.isNull(i18nLanguageId)) {
131 return null;
132 }
133
134 String i18nPath = StringPool.SLASH + i18nLanguageId;
135
136 Locale locale = LocaleUtil.fromLanguageId(i18nLanguageId);
137
138 if (Validator.isNull(locale.getCountry())) {
139
140
141
142 locale = LanguageUtil.getLocale(locale.getLanguage());
143
144 i18nLanguageId = LocaleUtil.toLanguageId(locale);
145 }
146
147 String redirect = path;
148
149 if (_log.isDebugEnabled()) {
150 _log.debug("Redirect " + redirect);
151 }
152
153 return new String[] {i18nLanguageId, i18nPath, redirect};
154 }
155
156 private static Log _log = LogFactoryUtil.getLog(I18nServlet.class);
157
158 private static Set<String> _languageIds = new HashSet<String>();
159
160 }